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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.wallpaper.model;
import android.app.Activity;
import android.content.Context;
import android.net.Uri;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.Log;
import androidx.exifinterface.media.ExifInterface;
import com.android.wallpaper.R;
import com.android.wallpaper.asset.Asset;
import com.android.wallpaper.asset.ContentUriAsset;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
/**
* Represents a wallpaper image from the system's image picker.
*/
public class ImageWallpaperInfo extends WallpaperInfo {
public static final Parcelable.Creator<ImageWallpaperInfo> CREATOR =
new Parcelable.Creator<ImageWallpaperInfo>() {
@Override
public ImageWallpaperInfo createFromParcel(Parcel in) {
return new ImageWallpaperInfo(in);
}
@Override
public ImageWallpaperInfo[] newArray(int size) {
return new ImageWallpaperInfo[size];
}
};
private static final String TAG = "ImageWallpaperInfo";
// Desired EXIF tags in descending order of priority.
private static final String[] EXIF_TAGS = {
ExifInterface.TAG_IMAGE_DESCRIPTION,
ExifInterface.TAG_ARTIST,
ExifInterface.TAG_DATETIME_ORIGINAL,
ExifInterface.TAG_MODEL,
};
private Uri mUri;
private ContentUriAsset mAsset;
private boolean mIsAssetUncached;
public ImageWallpaperInfo(Uri uri) {
mUri = uri;
}
public ImageWallpaperInfo(Uri uri, boolean uncachedAsset) {
mUri = uri;
mIsAssetUncached = uncachedAsset;
}
protected ImageWallpaperInfo(Parcel in) {
mUri = Uri.parse(in.readString());
}
@Override
public Uri getUri() {
return mUri;
}
/**
* Formats a localized date string based on the provided datetime string in EXIF datetime format.
*
* @param exifDateTime Datetime string in EXIF datetime format.
* @return Localized date string, or the original datetime string if it could not be parsed.
*/
private static String formatDate(String exifDateTime) {
try {
Date parsedDate = new SimpleDateFormat("yyyy:MM:dd HH:mm:ss").parse(exifDateTime);
return SimpleDateFormat.getDateInstance().format(parsedDate);
} catch (ParseException e) {
Log.w(TAG, "Unable to parse image datetime", e);
return exifDateTime;
}
}
private static List<String> getGenericAttributions(Context context) {
return Arrays.asList(
context.getResources().getString(R.string.my_photos_generic_wallpaper_title));
}
@Override
public String getTitle(Context context) {
return null;
}
@Override
public List<String> getAttributions(Context context) {
ContentUriAsset asset = (ContentUriAsset) getAsset(context);
if (!asset.isJpeg()) {
// Return generic attributions if image is not stored in the JPEG file format.
return getGenericAttributions(context);
}
List<String> attributes = new ArrayList<>();
for (String tag : EXIF_TAGS) {
String attribute = asset.readExifTag(tag);
if (attribute == null) {
continue;
}
if (tag == ExifInterface.TAG_DATETIME_ORIGINAL) {
attribute = formatDate(attribute);
}
attributes.add(attribute);
}
if (!attributes.isEmpty()) {
return attributes;
}
// Return generic attributions if image did not contain any desired EXIF tags.
return getGenericAttributions(context);
}
@Override
public Asset getAsset(Context context) {
if (mIsAssetUncached) {
mAsset = new ContentUriAsset(
context,
mUri,
/* uncached */ true);
} else {
if (mAsset == null) {
mAsset = new ContentUriAsset(context, mUri);
}
}
return mAsset;
}
@Override
public Asset getThumbAsset(Context context) {
return getAsset(context);
}
@Override
public String getCollectionId(Context context) {
return context.getString(R.string.image_wallpaper_collection_id);
}
@Override
public void showPreview(Activity srcActivity, InlinePreviewIntentFactory factory,
int requestCode) {
srcActivity.startActivityForResult(factory.newIntent(srcActivity, this), requestCode);
}
@Override
public void writeToParcel(Parcel parcel, int i) {
parcel.writeString(mUri.toString());
}
}
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